Fet″tle (?), v. t. [OE. & Prov. E., to fettle (in sense 1), fettle, n., order, repair, preparation, dress; prob. akin to E. fit. See Fit, a.] 1. To repair; to prepare; to put in order. Carlyle.
2. (Metal.) To cover or line with a mixture of ore, cinders, etc., as the hearth of a puddling furnace.